View photos of the edible plant Sagittaria platyphylla (Delta arrowhead).

View photos of the edible plant Sagittaria latifolia (Arrowhead), profiled in Wild Edible Plants of Texas.

A passage from Wild Edible Plants of Texas:

Pleasantly flavored, Arrowhead’s carbohydrate–
rich corms are usually a well–received table–fare, even for those predictably skittish of words like ‘wild’ and ‘edible’.